That is a good idea. Maybe now that many of us have become more conscious about the possibility of infecting others this will also also be normal in many more places after the pandemic.

In my home country (Mexico), having something like a flu was not considered a good reason to miss work or school. You had to pretty much be bedridden for absences to be justified. I then moved to the US for college and we were asked not to come to class if we were sick at all to avoid infecting others.